Expression and Concentration of Matrix Metalloproteinase 9 and Tissue Inhibitor of Matrix Metalloproteinases 1 in Laryngeal Squamous Cell Carcinoma

Table 1

Characteristics of patients with laryngeal cancer.

Characteristic	No. of cases	%
Age		—
Gender
Male	23	85.2
Female	4	14.8
T category
T1	0	0
T2	6	22.2
T3	12	44.4
T4	9	33.3
N category
(-)	20	74.1
(+)	7	25.9
Clinical stage
I	0	0
II	6	22.2
III	10	37.0
IV	11	40.7
Tumor differentiation
G1	12	44.4
G2	11	40.7
G3	4	14.8